ufs_access()." The call to getinoquota in ufs_access() serves the
purpose of instantiating inode dquot from the vn_open(). Since quotas
are accounted only for the inodes with already attached dquot, removal
of the call prevented opened inodes from participation in the quota
calculations.
Since ufs_access() may be called with the vnode being only shared
locked, upgrade (and then downgrade) vnode lock if calling
getinoquota().
Reported by: simon at optinet com
In collaboration with: pho
MFC after: 1 week
When I changed syscons(4) to work with the MPSAFE TTY code, I just
locked all device nodes down using the compatibility feature that allows
you to override the TTY's lock (Giant in this case). Upon closer
inspection, it seems sysmouse(4) only has two internal variables that
need locking: mouse_level and mouse_status.
I haven't done any performance benchmarks on this, though I think it
won't have any dramatic improvements on the system. It is good to get
rid of Giant here, because the third argument of tty_alloc() has only
been added to ease migration to MPSAFE TTY. It should not be used when
not needed.
While there, remove SC_MOUSE, which is a leftover from the MPSAFE TTY
import.
the latency based on the Min_Gnt register so use the algorithm found
in OpenSolaris as they probably know how to interpret the value Sun
puts into these registers (previously, the latency calculated for
66MHz was most likely wrong) and for bridges additionally set up the
secondary latency register. Also set up the bridge control register
the way it's done in OpenSolaris. As the latency register don't apply
to PCI-Express and the bridge control setup wasn't tested on sun4v
(besides most likely not being needed), expand the #ifndef SUN4V
accordingly.
MFC after: 3 days
backslash if he/she wants to use a non-traditional delimiter, i.e.,
anything other than a slash. That is, /abc/ works as is, but xabcx
needs to be spelled as \xabcx.
Add appropriate markup.
Bump Dd.
Checked with: IEEE Std 1003.1, 2004 Edition
MFC after: 3 days
Before we had a posix_openpt() that allocated PTY's with proper
permissions in place, we used this set-uid utility to change the
ownership of PTY slave devices to the real user ID of the process. This
utility was used to implement grantpt().
In my first designs of the MPSAFE TTY layer, I replaced this by adding
an ioctl() called TIOCGRANTPT, which was used to change the ownership.
I left the pt_chown utility, because older C libraries needed it to work
properly.
After some discussions back in June I changed the PTY code to set
permissions properly upon creation. Fortunately the previous grantpt()
implementation changed permissions by hand when pt_chown is not
installed, which always succeeds. This means grantpt() still works
properly, even though the set-uid utility is missing.
I've done tests with FreeBSD 5.2.1, FreeBSD 6.3 and FreeBSD 7.0 jails.
All of them still work if I remove pt_chown.
Reviewed by: philip (ex-mentor)
As discussed with Robert Watson on the src-committers list, it is safer
to keep at least some pty(4) entries in /etc/ttys, for applications that
roll their own PTY allocation routine and only search for BSD-style
PTY's.
This means we've now just toggled the amount of entries for pts(4) and
pty(4).
Requested by: rwatson
Since various 'find' incantations can emit container directories
in various orders, we cannot refuse to update a dir because it's
apparently the same age.
MFC after: 3 days
copying "dir/file" and then copying "dir" results in
"File on disk is not older; skipping" for the "dir" because
it was implicitly created by "dir/file." Among other sins,
this means that "dir" ends up with the wrong permissions
and ownership.
This is actually a libarchive bug; fix is forthcoming.
number in the irq register. While there are other issues with these
variants, avoiding writing to it helps interrupt generation on at
least one card, and doesn't hurt on the others. Flag ISA attachment
as needing INT_NO_REG written, and don't update the PC Card attachment
(which will have the effect of not touching it for PC Cards).
Document this in a comment, and tweak one or two formatting nits while
I'm here.
This is a sync to mesa/drm pre-gem, with a few fixes on top of that.
It also contains one local patch supplied by kib@ that I can't apply to
git.master shared code.
Approved by: flz
Obtained from: mesa/drm git.master
MFC after: 2 weeks
in a noticeable reduction in system time spent.
- If bus_dmamap_load_mbuf_sg(9) fails with EFBIG and we already have
defragmented the mbuf chain, don't bother to defragment and load it
a second time just yet as it's likely to fail again anyway.
MFC after: 3 days
The pty(4) driver raises up to warnings when an old BSD-style PTY is
created. The reason why I added this warning, was to make it easier to
spot applications that allocate BSD-style PTY's, while they should just
use openpty() or posix_openpt().
Add a sysctl, which allows you to override the number of remaining
messages, making it possible to suppress the warnings.
Requested by: kib
Reviewed by: kib
- Provide module dependency information.
- Static'ize ebus_release_resource() in order to match prototype.
- Remove outdated and/or obsolete comments.
- Fix whitespace bugs.
MFC after: 3 days
night.
Free the children after each pci bus that is searched. Otherwise we
leak them. With free in the new place, we also have to free children
before going to done when we find the device we're looking for.
Also, if we can't get the children of a device, just ignore that bus.
When there's an error, we don't want to free the children, since it
will be stack garbage. While we did fail to dereference it by setting
devs to 0, we didn't fail to call free. We never failed to fail, it
was the easiest thing to do.
(1) Abstract interpreter vnode labeling in execve(2) and mac_execve(2)
so that the general exec code isn't aware of the details of
allocating, copying, and freeing labels, rather, simply passes in
a void pointer to start and stop functions that will be used by
the framework. This change will be MFC'd.
(2) Introduce a new flags field to the MAC_POLICY_SET(9) interface
allowing policies to declare which types of objects require label
allocation, initialization, and destruction, and define a set of
flags covering various supported object types (MPC_OBJECT_PROC,
MPC_OBJECT_VNODE, MPC_OBJECT_INPCB, ...). This change reduces the
overhead of compiling the MAC Framework into the kernel if policies
aren't loaded, or if policies require labels on only a small number
or even no object types. Each time a policy is loaded or unloaded,
we recalculate a mask of labeled object types across all policies
present in the system. Eliminate MAC_ALWAYS_LABEL_MBUF option as it
is no longer required.
MFC after: 1 week ((1) only)
Reviewed by: csjp
Obtained from: TrustedBSD Project
Sponsored by: Apple, Inc.
not in the namecache when shared lookups are enabled (vfs.lookup_shared=1,
it is currently off by default) and the filesystem supports shared lookups
(e.g. NFS client). Specifically, if multiple concurrent LOOKUPs both miss
in the name cache in parallel, each of the lookups may each end up adding an
entry to the namecache resulting in duplicate entries in the namecache
for the same pathname. A subsequent removal of the mapping of that
pathname to that vnode (via remove or rename) would only evict one of the
entries from the name cache. As a result, subseqent lookups for that
pathname would still return the old vnode.
This race was observed with shared lookups over NFS where a file was updated
by writing a new file out to a temporary file name and then renaming that
temporary file to the "real" file to effect atomic updates of a file. Other
processes on the same client that were periodically reading the file would
occasionally receive an ESTALE error from open(2) because the VOP_GETATTR()
in nfs_open() would receive that error when given the stale vnode.
The fix here is to check for duplicates in cache_enter() and just return
if an entry for this same directory and leaf file name for this vnode is
already in the cache. The check for duplicates is done by walking the
per-vnode list of name cache entries. It is expected that this list should
be very small in the common case (usually 0 or 1 entries during a
cache_enter() since most files only have 1 "leaf" name).
Reviewed by: ups, scottl
MFC after: 2 months
PHY only and not also in the case of an external PHY currently
doing full duplex, which accidentally got broken in r172334.
It's still not clear to me why we need to enable the buffer for
an internal PHY though.
- Count excess and late collisions as output errors. [1]
- Count receive errors as input errors. [1]
Obtained from: NetBSD [1]
MFC after: 3 days
space provided by its argument structure, return EOVERFLOW instead of
E2BIG. The latter is documented in Solaris's man page, but the
former is implemented. In either case, the caller should use
getaudit_addr(2) to return the IPv6 address.
Submitted by: sson
Obtained from: Apple, Inc.
MFC after: 3 days
Because we now use pts(4)-style PTY's exclusively, there is no use for
these entries in /etc/ttys. Right now the pts(4) entries only go from 0
to 255. Because we're going to touch these files anyway, increase the
number to 511.
Discussed with: philip (ex-mentor)
on the presence of fhc(4) instead; we by far don't support all of
the functionality provide by the clock board but in general it's
an integral part of FireHose-based systems which shouldn't be
possible to omit.
we can be sure that it's valid.
In case we abort early free it again else put it into the syncache.
We need the cred in the syncache to be able to restrict what will be
exportet by the sysctl helper function syncache_pcblist() (to netstat)
within jails.
PR: kern/126493
Reviewed by: rwatson (earlier versions)
MFC after: 3 days
